Coating



Patented Oct 20, 1931 Y i I UNITED STATES CHARLES R. MCKEE, or MILWAUKEE, w1s 6asm ass1 mawozmanicxumm a i j FELT COMPANY, OFCHICAGO, ILLINOIS:

comma I No Drawing.

The invention relates to a new coating or sizing.

The object ofthe invention is to provide a new composition of matter forming a coating 5 or sizing for the purpose of rendering the material coated therewith impervious to the usual cementsor adhesives used in securing this material to other materials and also having desirable properties for use as a size 10 in connection with the manufacture of cloth p v such-as'fcassavaor sago, or, corn or potato starch. 'Thecassava or sago starchesare preproducts, felt products and certain kinds of paper.

The invention further consists 1n a new composition of matter hereinafter more pars;

ticularly described and claimed. Y I

Broadly stated, the sizing embodying the invention consists of a viscous adhesive coating and a, small amount ofan emulsified; oil. I As an example of the sizingembodying the invention, the following formula is given; Water 85 parts, ground glue 5 parts, starch 5 parts, Sulphite extract part-s and'sulphonated oil 2 parts.

The glue, starch and sulphite extract in-' gredients, with the water, forms a Watery, colloidal mass constituting a viscous adhesive coating composition to which is addedfla small amount of an emulsified oil, to-wit':

about two per cent. by weight of the whole mass, which has a colloidal effect on the hole omposition. 1 V

The glue is preferably an animal glue pres pared'from'bones or hide material. Stated in another way, I use equal parts of ground glue and starch, sulphite extract to the amount of about thirty per cent. of saidin- I gredients, and water, which ingredients are colloidally combined with a small amount of an emulsified oil, preferably a sulphonated 40 oil.

If necessary to prevent the possibility of souring, the coating may have a preservative added thereto, such as Beta-naphthol dissolved in a suitable solvent, such as denatured 45. alcohol, in proportions of one part Betanaphthol to four parts of denatured alcohol in eight hundred parts ofthe above mixture. Alpha-naphthylamine' may be similarly dissolved in denatured alcohol and mixed in" eight hundred parts of the mixture. .The'pre- Application filed November '26, 18128 7 Serial riot." 332,081.

conron Arr'on -oir 'nELAwAn -w:

servatives abdve described alsohave of moth-proofingmaterial on which the mlxture is "usedf as jthe action of sublimation causes gasesto' begiven ofi which" repel sects","su'ch as'moths', and these gases persist in '55 the fabric or other material with which the The starch may' be elther, a'tapioca starch, so:

f z if da hiey ed ce the period ofboilingin t Pf r i n o the mature. 1

The. sulphitee 't'ract, as is three parts of 1siilphite extract I v prefer to u e thefb'leachedf'form ,of'said xtract as one part, for the purpose of improvingv d scolor of the coating, This sulphite extract adhesiv "'ropertiesas, wellja's coloring .properties whichfform m ny film n the ,'-80 "surfacejofthe coating which will retard the penetration of moistureor any adhesive which may be subsequently applied to said.

coating and yet allow the coatin itself to adhere to the material to which it 1s applied. 8?

The ingredients noted above are soaked in the water, which is "initially cold, and then the mixture is boiled, to breakup the starch granules, at any suitable boiling tempera ture, for example, two hundred twelve degree's'Fahrenheit. The mixture so prepared may be incorpo rated with thematerial in connection with whlch it is to be used in any suitable manner, for example by spraying it on the material 41 or. by putting it on with a brush, the par ticul'ar methodof application depending upon the type of material being treated. Spraying ispreferably'done by devices usingv compressed air and; of: constructionswell .---v l v -i'sa product obtained from the waste sulphite liquor'inthe manufacture of paper and ofthe 30 phonated oilf 1 known in the art so it is not deemed necessary to illustrate the same. i The brushing is done With a brush such as used in spreading paint and ofa length or size suitable for the 5 material.

v Theboiiting abovefdesciibed has the defsirablecharact'eristic ofbeing impervious to ordinary adhesives, such as cleXtrinecements It is-also elasticandhencejmaterial onwhioha it is usedu may bereadily, manipulated with out danger of cracking the coating. The'sizing itself forms a film or thinlayer on the";v material and in and of itself has no particular penetrating qualities so that 'thenatural characteristics of the material being covered by tlie'co'ating may be maintained. The coat 'ingi also has adhesive" properties; making desirable for use as a coatingr 'between the c'jated' material and a suitable cement or ad-f 2 hesi've; o 1

[The proportions of materialstated' above vei y ay' r an x m l ra d m ym c0urse,*be"Va-ried to some extent Withoutde partingfrommy inyentionl I i I claim as my invention is i 1. A new coating jcompositio'nor "sizing comprising a atery, viscous adhesive coat:

ing composed oi ground glue, starchandsul-f pbite extract"and'asmall ainou'nt of ar-sul.

f :2; A- new sizingi ground :glue, 7 five parts;- starch, fiveparts; sulphite ex tract-{three parts sulphona-ted oil; two' pa-rts'j 1 mixed, withsubstantifilljfeighty fiver-iparts' N fi've parts, ground glue about five parts, starch l aboutifive parts, sulphite extractthreeparts, I

I 40 4. A" new ooating composition or 'sizing comprising a Watery, yiscous adhesive coat};

ing coinpo'sed'of ground glue; starch and 'suli phite extract] and" about two-per cent. by Weight of a sulphonated oil; i

3 CHARLES R; 

